Multiple block mold



Sept. 19, 1950 M M, CASE 2,522,603

MULTIPLE BLOCK MOLD Filed Aug. s, 194e 2 sheets-sheet 1 Sept. 19, 1950 M. M. cAsE l Y MULTIPLE BLOCK MOLD 2 Sheets-Sheet 2 Filed Aug. 6, 1946 Patented Sept. 19, 1950 MULTIPLE B110 GK MOLD Martin M. Case, Roanokeapids, N. C. Application August 6, 194'6, Serial No. 688.756

This invention relates to multiple block molds and more particularly to improvements in molds vfor making corner blocks, half blocks, and full blocks.

It is an object of this invention to provide an 1 Claim. (Cl. 25-121) improved mold as forms for use in the manufacture of concrete building units.

It is another object of this invention to provide block molds from standard parts which may be easily assembled to produce forms for corner blocks, half blocks, regular blocks, or`

other desired irregular or partial blocks `from poured concrete.

It is an object oi'i this invention to provide an improved block mold assembled fromsheet metal sections which may be readily removed from the blocks molded therein for reassembly and reuse.

It is an object of this invention to provide block vmold parts which may be assembled quickly in various combinations to provide sturdy molds for various forms of poured concrete blocks.

It is a further object of this invention to provide improved block molds of the general type disclosed in U. S. Patent No. 1,282,607, issued to John F. McElroy et al., October 22, 1918.

Other objects and advantages of the invention will be readily apparent from the following detailed description of embodiments of the invention shown in the accompanying drawing where- Figure 1 is a plan view of a multiple mold for use in making corner blocks.

Figure 2 is an expanded sectional view taken on line 2-2 of Figure 1.

Figure 3 is a perspective view of a corner block formed in the mold of Figure 1.

Figure 4 is a vertical section view of the preferred form of partition used in multiple molds of Figures 1,2, and 6 to separate one block from another.

Figure 5 is a perspective view of one element of the partition member used in the corner block mold of Figure 1.

Figure 6 is a perspective view of a multiple mold for use in making regular blocks and/or half blocks.

Figure '7 is a plan view of a portion of the mold of Figure 6 illustrating the use of a removable partition for making half blocks.

Figure 8 is an elevational section View taken on line 8-8 of Figure 7.

Referring now to the drawings for the purpose of illustration, the multiple mold for corner blocks shown in Figure 1 includes parallel side members Il] and II connectedby live partition members I2. The side member I0 preferably vhas a channel cross-section as shown in Figure `2, including a projecting channel I3 to form an vend groove in the corner block I4, oneof'the latter being illustrated in Figure 3, removed from the mold. Each of the partition members `I2'has a vprojecting channel portion I5 on each side face thereof to form the side grooves .in .the block i4. The side member Il hasan outwardly projecting channel l5 extending along the length thereof. and is'provided onits inner face with a plate I1' having spaced slots I8 therealong. The end ofeach partition member i12 'adjacent the plate Il has a projecting tabl!! to extend through the slot I8 into the channel I6. Referring :particularly-to Figure 4, the :partitionmembers I2 may be lformed -from sheet metal of about 22-:gauge thickness andprefer.- ablyv includes a4 central nat plate 20 between-.two channelled members 2| and 22, the three parts being riveted together. The lower longitudinal edges of the members 2l and 22 are flanged outwardly and clamped together by a C-shaped clip 23. The upper edge 24 of member 22 is turned over the upper edge of member 2| to provide added strength. The use of the central plate 2li, the clip 23, and the turned over edge 2li provide a durable and strong partition member which may be reused many times. The side members ID and Il are assembled and may be held rigidly to one another with the partition members i2 extending therebetween by means of clamping straps 25 engaging angle iron brackets 26 tted against the outer ends of the side members l0 and II, onel end of each strap being provided with an eccentrically mounted clamping handle 2l. The side member I0 may be provided with inturned lugs 26 to engage the inner surface of the projecting channels I5 of the partition members I2 to properly space the partition members along the side member I0. The corner block mold shown in Figure 1 includes ve partition members l2 for making four corner blocks ill at one side.

Referring now to the multiple mold illustrated in Figure 6, the mold includes side members 3l] and 3|, similar to side member ID of the Figure 1 construction, and partition members 32, similar in cross-section to the partition member illustrated in Figure 4. The side members 30 and 3| have inwardly directed channels 33 and 3ft to form grooves in each end of the blocks molded therein. The projecting channel portions l5 of the partitions 32 may be provided with vertical slots cut therethrough at or near the center to receive and position rectangular plates 35 when it is desired to mold half blocks. The end partition members 32 may be formed with a flat outer face, or may be similar to the partitions 32 with a projecting channel on each face, as shown. The multiple block mold of Figure L6 may be held in the assembled position shown by means of straps 25 extending through some of the hollow partition members 32 from side member 30 to side member 3l, angle iron members 36 being provided on the outer faces of the side members'and the straps 25 being provided with eccen'trically mounted clamping handles 31, similar 1gothose shown in the Figure 1 construction.

three pieces of sheet metal secured together, and

f a-,rt-ransverse C-shaped clip reinforcing the lower The use of the multiple mold describedf`abve 'i will be readily apparent to those skilled in the art. ,For lmaking corner blocks, the mold is as- :sembled as shown in Figure 1 and supported on a `nat horizontal surface or" pallet. A cement or .concrete mixture of fluent consistency is poured yinto the mold and may be tamped, rolledor A-vibrated to insurethat `it fills all spaces between .the side .members andthe partition members.

As'soon as the mixture has set or hardened sufin vertical slots in the channels I5 ofthe parti.-

tions 32 when' it is desired to' mold half blocks. The' mold shown in'Figure 6 is assembled for moldingj six half lblocks i and eight 'complete blocks. Obviously the molds may be constructed to form any number of complete 'ormodied Lblocks. The molds are easily removed 'Afro'm lthe vNumber transverse edge of said partition member, the outer two sheets of said partition member each having an outwardly projecting transverse flange along its lower edge, the upper transverseedge of one of said outer sheets being folded over and enclosing the upper transverse edge ofthe other outer sheet, said transverse clip engaging the said lower edge flanges of the saidy outer two sheets, said third piece of sheet metal being iiat and secured between the said outer two sheets, and being'of less widthl than the distance between said lower flangeengag ing clip and said folded over upper edge.

MARTIN M. CASE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date 1,218,737 Zagelmeyer Mar. 13, 1917 1,347,015 Creason July 20, 1920 1,391,638 Killits Sept. 20, 1921 1,489,070 Ey Apr. 1, 1924 .11,581,044 1 Ey Apr. 13, 1926 1,603,225 Wagner, Jr Oct. 12, 1926 

